Always-on PDU session management method and device
AssigneeDatang Mobile Communications Equipment Co., Ltd.
InventorTingfang Tang
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Abstract
Embodiments of the present invention relate to the technical field of communications, and particularly relate to an always-on PDU session management method and device for reducing system overhead and improving user experience. The method provided in the embodiments of the present invention comprise: a session management function (SMF) determining that an attribute of a PDU session is an always-on PDU session; the SMF recording the attribute of the PDU session in a session management context; and the SMF managing the PDU session according to the attribute of the PDU session recorded in the session management context.
Claims13
An always-on PDU session management method, comprises:
- determining, by a session management function, that an attribute of a Protocol Data Unit, PDU, session is always-on;
- recording, by the session management function, the attribute of the PDU session in a session management context;
- managing, by the session management function, the PDU session according to the attribute of the PDU session in the session management context, comprising one of following schemes:
- scheme 1:
- sending, by the session management function, an inactive time period to a user plane function;
- receiving, by the session management function, a message sent by the user plane function that the PDU session has no data transmission during the inactive time period;
- not deactivating the PDU session in response to the attribute of the PDU session in the session management context being always-on;
- scheme 2:
- performing a session switching on the PDU session in response to the attribute of the PDU session in the session management context being always-on,
- wherein the performing a session switching on the PDU session, comprises:
- receiving, by the session management function, a session update request sent by the access and mobility management function, and determining that the user equipment enters a non-allowed area;
- modifying, by the session management function, user plane resources for the PDU session to switch the user plane path according to the attribute of the PDU session being the always-on PDU session.
An electronic device, comprises:
- at least one processor, and
- a memory communicatively connected to the at least one processor;
- wherein:
- the memory is configured to store instructions;
- the at least one processor is configured to execute the instructions to perform a process of:
- determining that an attribute of a Protocol Data Unit, PDU, session is always-on;
- recording the attribute of the PDU session in a session management context;
- managing the PDU session according to the attribute of the PDU session in the session management context by one of following schemes:
- scheme 1:
- sending an inactive time period to a user plane function;
- receiving a message sent by the user plane function that the PDU session has no data transmission during the inactive time period;
- not deactivating the PDU session in response to the attribute of the PDU session in the session management context being always-on;
- scheme 2:
- performing a session switching on the PDU session in response to the attribute of the PDU session in the session management context being always-on,
- wherein the performing a session switching on the PDU session, comprises:
- receiving a session update request, and determining that the user equipment enters a non-allowed area;
- modifying user plane resources for the PDU session to switch the user plane path according to the attribute of the PDU session being the always-on PDU session.
Dependencies are inferred from the claim text.